Supporting roll machining method

Abstract

The invention discloses a supporting roller machining method. The technical problem that in the prior art, the roller type precision of remachining of a supporting roller is low is solved. The supporting roll machining method comprises the following steps: step 1, marking a bearing seat of which the positioning surface damage reaches the limit damage; secondly, the height difference value between the height value of the marked lower arc-shaped base plate of the bearing seat relative to the positioning face and the groove depth value of a groove of a center frame of the grinding machine is obtained; thirdly, a gasket is provided according to the obtained height difference value, and the gasket is fixedly arranged at the groove bottom of the groove; and fourthly, the bearing seat is installed on the center frame again, and a lower arc-shaped base plate of the bearing seat makes contact with the top face of a gasket so that a new positioning face can be formed by the lower arc-shaped base plate. According to the supporting roller machining method, the roller shape precision of the remachined supporting roller is high, and the remachining cost is reduced.

Description

Technical Field

[0001] The present application belongs to the technical field of support roller processing, and specifically relates to a support roller processing method. Background Art

[0002] As an important component of the steel rolling production line, the backup roller needs to maintain high roll profile accuracy to ensure the yield of the steel rolling production line.

[0003] See also Figure 1 During the production or maintenance of the support rollers, the support rollers need to be ground on the grinder with the bearing seats. However, the service conditions of the bearing seats are relatively poor and the service cycle is long. The positioning surface of the bearing seats used to cooperate with the center frame of the grinder is prone to severe rust, resulting in inaccurate positioning of the positioning surface. After the rollers are ground, the roller shape accuracy cannot meet the tolerance requirements and can only be reground. Occasionally, the requirements cannot be met after regrinding, which affects the turnover of the rollers. Summary of the invention

[0004] In order to solve the current technical problem of low roller shape accuracy in the reprocessing of support rollers, the present application provides a support roller processing method.

[0005] In a first aspect of the present application, a method for processing a support roller is provided, comprising:

[0006] Step 1: Mark the bearing seat where the locating surface damage reaches the limit damage;

[0007] Step 2: Obtain the height difference between the marked lower arc pad of the bearing seat and the height of the positioning surface and the groove depth of the groove of the center frame of the grinding machine;

[0008] Step 3: providing a gasket according to the height difference value obtained, and fixing the gasket at the bottom of the groove;

[0009] Step 4: Reinstall the bearing seat on the center frame, wherein the lower arc-shaped pad of the bearing seat contacts the top surface of the sheet so that the lower arc-shaped pad forms a new positioning surface.

[0010] In some embodiments, the step one comprises:

[0011] Obtaining the roller profile accuracy of the support roller processed by the grinder;

[0012] When the roller profile accuracy obtained does not meet the processing requirements, it is detected whether the positioning surfaces of the bearing seats at both ends of the support roller are damaged to the limit.

[0013] In some embodiments, the step 2 includes grinding the marked positioning surface of the bearing seat to remove the wear surface, and obtaining the height difference after removing the wear surface.

[0014] In some embodiments, the step three includes that two gaskets are provided at the bottom of each groove, and the bottom surface of the lower arc-shaped pad is in contact with the top surfaces of the two gaskets.

[0015] In some embodiments, the step three includes obtaining the groove width of the groove, and providing the gasket according to the obtained groove width of the groove, wherein the width of the gasket is smaller than the groove width of the groove.

[0016] In some embodiments, the step three includes fixing the gasket at the bottom of the groove, and spacing the side wall of the gasket from the groove wall of the groove.

[0017] In some embodiments, step three includes obtaining the hardness of the lower arc-shaped pad of the bearing seat, and providing the gasket based on the obtained hardness of the lower arc-shaped pad, wherein the hardness of the gasket is less than the hardness of the lower arc-shaped pad of the bearing seat.

[0018] In some embodiments, the recycling method further comprises:

[0019] Step 5: starting the grinder to perform a test grinding operation on the support roller;

[0020] Step 6: Obtain the roller profile accuracy of the support roller after the test grinding operation;

[0021] Step seven: When the roller profile accuracy of the support roller does not meet the processing requirements, adjust the contact state between the lower arc pad and the gasket until the roller profile accuracy of the support roller obtained by the test grinding operation meets the processing requirements.

[0022] In some embodiments, the recycling method further comprises:

[0023] Step eight: obtaining the real-time thickness of the gasket, and replacing the gasket after the difference between the real-time thickness of the gasket and the initial thickness of the gasket is greater than a limit difference.

[0024] According to the supporting roller processing method provided in one or more embodiments of the present application, a gasket is provided to the center frame on the grinding machine so that the gasket on the center frame can contact the lower arc-shaped pad of the bearing seat, that is, the surface where the lower arc-shaped pad and the gasket contact is a new positioning surface with high precision. It is used as a new positioning surface for processing the supporting roller, which can effectively improve the roller shape accuracy of the recycled supporting roller after re-processing by the grinder, and reasonably utilizes the existing structure of the bearing seat. Without replacing the bearing seat, the accuracy of the positioning surface is improved, thereby reducing the cost of recycling and reprocessing the supporting roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1The figure shows a schematic diagram of the structure of the bearing seat and the center frame in the prior art when they are matched.

[0026] Figure 2 A schematic flow chart of a method for processing a support roller in one or more embodiments of the present application.

[0027] Figure 3 A schematic diagram of the structure of a portion of the bearing seat and the center frame when they cooperate in one or more embodiments of the present application is shown.

[0028] Figure 4 Shows Figure 3 Schematic diagram of the cross-sectional structure along the AA direction.

[0029] Explanation of the reference numerals: 1-bearing seat, 11-lower arc pad, 12-positioning surface, 13-new positioning surface, 2-center frame, 21-groove, 22-groove bottom, 23-groove wall, 3-gasket. DETAILED DESCRIPTION

[0030] In order to make the technical personnel in the technical field to which the present application belongs to understand the present application more clearly, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0031] See also Figure 1 For the existing support roller processing, the positioning surface 12 of the bearing seat 1 is part of the bottom surface of the bearing seat 1, and the bottom surface of the bearing seat 1 is provided with a lower arc pad 11, which generally plays a role of limiting, that is, the lower arc pad 11 of the bearing seat 1 is not easily worn during the use or processing of the support roller, and the lower arc pad 11 protrudes compared to the bottom surface of the bearing seat 1. The structure used to connect with the bearing seat 1 on the grinding machine is a center frame 2, and the center frame 2 has a receiving surface matching the positioning surface 12. The receiving surface is provided with a groove 21 to accommodate the lower arc pad 11 of the bearing seat 1, and the width of the groove 21 is greater than the width of the lower arc pad 11. At this time, the lower arc pad 11 does not contact the groove bottom 22 of the groove 21 of the center frame 2.

[0032] See also Figure 2-Figure 4 According to a first aspect of the present application, a method for processing a support roller is provided, comprising the following steps.

[0033] Step S100: Mark the bearing seat 1 whose positioning surface 12 is damaged to the limit.

[0034] Step S200: Obtain the height difference between the height value of the marked lower arc pad 11 of the bearing seat 1 compared to the positioning surface 12 and the groove depth value of the groove 21 of the center frame 2 of the grinding machine.

[0035] Step S300 : providing a gasket 3 according to the obtained height difference value, and fixing the gasket 3 on the groove bottom 22 of the groove 21 .

[0036] Step S400 : reinstall the bearing seat 1 on the center frame 2 , wherein the lower arc-shaped pad 11 of the bearing seat 1 contacts the top surface of the gasket 3 , so that the lower arc-shaped pad 11 forms a new positioning surface 13 .

[0037] In the process of using a grinder to process support rollers, different support rollers have different working hours, so the bearing seats 1 at both ends of the support rollers have different degrees of rust or other types of wear. When the degree of wear or rust on the positioning surface 12 of the bearing seat 1 exceeds the limit damage, the misalignment of the positioning surface 12 will cause the roller shape accuracy of the support roller to be lower than the processing requirements of the support roller. Therefore, the bearing seat 1 with damage exceeding the limit damage is marked to make the processing method more targeted and reduce the processing cost. The way to mark the bearing seat 1 is to make a mark on the surface of the bearing seat 1 that is easy to observe by scratching or drawing; wherein, the standard of limit damage can be selected as the flatness of the positioning surface 12 or the roughness of the positioning surface 12.

[0038] After the marked bearing seat 1 is obtained through step S100, considering that the height difference between the damaged positioning surface 12 and the lower arc pad 11 is very likely to increase, therefore, by obtaining the height difference between the lower arc pad 11 of the bearing seat 1 compared to the positioning surface 12 and the groove depth value of the groove 21 of the center frame 2 of the grinder, a more accurate interval between the bottom 22 of the groove 21 and the lower arc pad 11 is obtained, and then a gasket 3 with a thickness matching the marked bearing seat 1 is provided to ensure that the lower arc pad 11 can contact the gasket 3 installed at the bottom 22 of the groove 21.

[0039] It can be understood that by providing a gasket 3 to the center frame 2 on the grinder, the gasket 3 on the center frame 2 can contact with the lower arc-shaped pad 11 of the bearing seat 1, so that the surface where the lower arc-shaped pad 11 contacts with the gasket 3 can be made into a new positioning surface 13. The lower arc-shaped pad 11 is not easy to deform or wear during use. Naturally, the distance between the bottom surface of the lower arc-shaped pad 11 and the supporting roller on the bearing seat 1 is unchanged. Then, the part where the lower arc-shaped pad 11 contacts with the gasket 3 is used as the new positioning surface 13, which has higher precision. The arc surface of the lower arc-shaped pad 11 is coaxial with the axis of the bearing seat 1 and is used as a new positioning surface 12 for processing the supporting roller. This can effectively improve the roller shape accuracy of the recycled supporting roller after re-processing by the grinder, and rationally utilize the existing structure of the bearing seat 1. Without replacing the bearing seat 1, the accuracy of the positioning surface 12 is improved, thereby reducing the cost of recycling and reprocessing the supporting roller.

[0040] In some embodiments, step S100 includes:

[0041] S110: Obtaining the roller profile accuracy of the support roller processed by the grinder;

[0042] S120: When the obtained roller profile accuracy does not meet the processing requirements, check whether the positioning surfaces 12 of the bearing seats 1 at both ends of the support roller are damaged to the limit.

[0043] Generally speaking, operators can visually determine whether the locating surfaces 12 of the bearing seats 1 at both ends of the support rollers are severely worn, but such estimates are limited by the operators' experience, and different operators have different judgments on the damage standards of the locating surfaces 12. Therefore, by determining whether the roller profile accuracy of the recovered and processed support rollers meets the processing requirements, it is possible to determine whether the locating surfaces 12 of the bearing seats 1 are severely worn, and further detect the surface of the locating surfaces 12 through corresponding equipment to determine whether the damage to the locating surfaces 12 exceeds the limit damage value. Specifically, the flatness of the locating surface 12 obtained is greater than the set value and / or the roughness of the locating surface 12 is greater than the set value, indicating that the damage to the locating surface 12 exceeds the limit damage value.

[0044] For the bearing seat 1 whose damage of the positioning surface 12 does not exceed the value of the limit damage, the operator can detect whether the roller profile accuracy of the machined support roller does not meet the machining requirements due to failure of other parts of the grinder.

[0045] In some embodiments, step S200 includes grinding the marked positioning surface 12 of the bearing seat 1 to remove the wear surface, and obtaining the height difference after removing the wear surface.

[0046] The accuracy of the height difference is improved by removing the worn surface. Specifically, the worn surface is the damaged surface on the positioning surface 12. The damage to the positioning surface 12 causes the flatness of the positioning surface 12 to change. Directly measuring the height difference may result in the height difference being too large or too small. In addition, rust-type damage will change with the use of the bearing seat 1. Therefore, after removing the worn surface, during the use of the bearing, the height difference between the positioning surface 12 and the lower arc-shaped pad 11 will not easily change, and will not have a significant impact on the positioning effect of the new positioning surface 13, which is beneficial to the reprocessing of the support roller.

[0047] See also Figure 3 In some embodiments, step S300 includes: two gaskets 3 are provided at the groove bottom 22 of each groove 21, and the bottom surface of the lower arc-shaped pad 11 is in contact with the top surfaces of the two gaskets 3.

[0048] The gasket 3 can be installed in the groove 21 by welding or screwing. The groove 21 of some center frames 2 is longer. By providing two gaskets 3 and arranging the two gaskets 3 at an interval, the consumption of the gaskets 3 is reduced and the use cost is reduced.

[0049] In some embodiments, step S300 includes obtaining the groove width of the groove 21 , and providing a gasket 3 according to the obtained groove width of the groove 21 , wherein the width of the gasket 3 is smaller than the groove width of the groove 21 .

[0050] Taking into account that the supporting roller and its bearing seat 1 have a heavy deadweight, while the gasket 3 is thin, when providing the gasket 3, the width of the gasket 3 is made smaller than the notch of the groove 21 to reserve a gap. During the load-bearing process, even if the gasket 3 is deformed, the gasket 3 can extend toward the gap between the gasket 3 and the groove wall 23 of the groove 21. The top surface of the gasket 3 is not easy to be uneven due to the restriction of the groove 21. Moreover, the top surface of the gasket 3 that is deformed by the squeezing of the lower arc pad 11 will be more in line with the shape of the lower arc pad 11, and the contact area between the gasket 3 and the lower arc pad 11 will be increased. The lower arc pad 11 is not easy to deform, that is, the new positioning surface 13 can maintain a good positioning effect.

[0051] See also Figure 3 and Figure 4 In some embodiments, step S300 includes fixing a gasket 3 on the groove bottom 22 of the groove 21 , and spacing the side wall of the gasket 3 from the groove wall 23 of the groove 21 .

[0052] That is, the gasket 3 is not in contact with the groove wall 23 of the groove 21 on all sides, so as to reserve a gap for the gasket 3 to deform. It should be noted that, in this embodiment, the groove wall 23 of the groove 21 refers to the side wall of the groove 21, not the bottom wall.

[0053] In some embodiments, step S300 includes obtaining the hardness of the lower arc-shaped pad 11 of the bearing seat 1, and providing a gasket 3 based on the obtained hardness of the lower arc-shaped pad 11, wherein the hardness of the gasket 3 is less than the hardness of the lower arc-shaped pad 11 of the bearing seat 1.

[0054] By making the hardness of the gasket 3 lower than that of the lower arc-shaped pad 11, the gasket 3 is easier to deform than the lower arc-shaped pad 11 after bearing the bearing seat 1 and the supporting roller. On the one hand, the adaptability of the gasket 3 can be improved, and on the other hand, the lower arc-shaped pad 11 is not easily deformed by the gasket 3, and the new positioning surface 13 can maintain a good positioning effect.

[0055] Since the specifications of the bearing seats 1 of the support rollers on the same production line are consistent, the gasket 3 arranged in the groove 21 can be adapted to multiple support rollers. Therefore, in some embodiments, the recycling method also includes step S500: starting the grinder to perform test grinding operations on the support rollers.

[0056] Step S600: obtaining the roller profile accuracy of the support roller after the test grinding operation.

[0057] Step S700: When the roller profile accuracy of the support roller does not meet the processing requirements, the contact state between the lower arc-shaped pad 11 and the gasket 3 is adjusted until the roller profile accuracy of the support roller obtained by the test grinding operation meets the processing requirements.

[0058] That is, after installing the gasket 3 in the groove 21 of the center frame 2 and using the lower arc pad 11 of the bearing seat 1 as the new positioning surface 13, the support roller is reprocessed to determine whether the specification or installation position of the gasket 3 can meet the requirements, thereby ensuring that the gasket 3 can be used by multiple support rollers.

[0059] In some embodiments, the recycling method further includes step S300: obtaining the real-time thickness of the gasket 3, and replacing the gasket 3 after the difference between the real-time thickness of the gasket 3 and the initial thickness of the gasket 3 is greater than a limit difference.

[0060] By replacing the gasket 3 immediately, it is ensured that the accuracy of the new positioning surface 13 can be maintained within a certain range, thereby ensuring the roller profile accuracy of the support roller processed by the grinder.

[0061] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0062] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise" and "counterclockwise" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0063] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0064] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0065] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A method for processing a support roller, characterized in that: include, Step 1: Mark the bearing seat where the locating surface damage reaches the limit damage; Step 2: Obtain the height difference between the marked lower arc pad of the bearing seat and the height of the positioning surface and the groove depth of the groove of the center frame of the grinding machine; Step 3: providing a gasket according to the height difference value obtained, and fixing the gasket at the bottom of the groove; Step 4: Reinstall the bearing seat on the center frame, wherein the lower arc-shaped pad of the bearing seat contacts the top surface of the gasket so that the lower arc-shaped pad forms a new positioning surface.

2. The method for processing a support roller according to claim 1, characterized in that: The step one comprises: Obtaining the roller profile accuracy of the support roller processed by the grinder; When the roller profile accuracy obtained does not meet the processing requirements, it is detected whether the positioning surfaces of the bearing seats at both ends of the support roller are damaged to the limit.

3. The method for processing a support roller according to claim 1, characterized in that: The second step includes grinding the marked positioning surface of the bearing seat to remove the wear surface, and obtaining the height difference after removing the wear surface.

4. The method for processing a support roller according to claim 1, characterized in that: The step three includes that two gaskets are arranged at the bottom of each groove, and the bottom surface of the lower arc-shaped pad is in contact with the top surfaces of the two gaskets.

5. The method for processing a support roller according to claim 1, characterized in that: The step three includes obtaining the groove width of the groove, and providing the gasket according to the obtained groove width of the groove, wherein the width of the gasket is smaller than the groove width of the groove.

6. The method for processing a support roller according to claim 5, characterized in that: The step three includes fixing the gasket at the bottom of the groove, and setting the side wall of the gasket to be spaced apart from the groove wall of the groove.

7. The method for processing a support roller according to claim 1, characterized in that: The step three includes obtaining the hardness of the lower arc-shaped pad of the bearing seat, and providing the gasket according to the obtained hardness of the lower arc-shaped pad, wherein the hardness of the gasket is less than the hardness of the lower arc-shaped pad of the bearing seat.

8. The method for processing a support roller according to claim 1, characterized in that: The recycling method further comprises: Step 5: starting the grinder to perform a test grinding operation on the support roller; Step 6: Obtain the roller profile accuracy of the support roller after the test grinding operation; Step seven: When the roller profile accuracy of the support roller does not meet the processing requirements, adjust the contact state between the lower arc pad and the gasket until the roller profile accuracy of the support roller obtained by the test grinding operation meets the processing requirements.

9. The method for processing a support roller according to claim 1, characterized in that: The recycling method further comprises: Step eight: obtaining the real-time thickness of the gasket, and replacing the gasket after the difference between the real-time thickness of the gasket and the initial thickness of the gasket is greater than a limit difference.

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